Google FeedServer is an open-source Atom Publishing provider based on the Abdera Framework. Google FeedServer has chosen to implement simple backend data adapters that allow the developer to quickly deploy a feed for an existing data source such as a db
The Atom Publishing Protocol (APP) is an application-level protocol for publishing and editing Web resources. The protocol is based on HTTP transfer of Atom-formatted representations. The Atom format is documented in the Atom Syndication Format.
The project provides what is essentially a complete RSS and Atom development kit, which includes feed parsers, generators, blog client libraries, an Atom protocol implementation, a set of ten useful blogapps, and an easy-to-install blog and wiki server.
Blogapps - Useful RSS/Atom examples and utilities project hosts the examples and utilities from the upcoming Manning Publications book RSS and Atom In Action by Dave Johnson.